Digital differential analyzer



prii l1, 1967 R. E. BIBLE DIGITAL DIFFERENTIAL ANALYZER 52 Sheets-Sheet l Filed May 1l, 1956 ATTORNEY Apri ll, 1967 R. E. BIBLE DIGITAL DIFFERENTIAL ANALYZER Filed May ll, 1956 FIG. 4

CATHODE F ow N CATHODE OLLOWER 52 Sheets-Sheet 2 HVVENTOR. ROBERT E. BIBLE ATTORNEY Apk-11 11, 1967 R. E BIBLEv 3,313,925

` DIGITAL DIFFERENTIAL ANALYZER Filed May 11, 1956 52 SheetIs--Sheefl 3 FIG. 5

FLIP |64 FLOP DELAY LIN POSITION COUNTER N CATHO DE FOLLOWE vAND k7: NT ATTORNEY pi 11, 1967 R E, B|B| E DIGITAL DIFFERENTIAL ANALYZER 52 Sheets-Sheet 4 Filed May 1l, 1956 ATTORNEY INVENTOR.

ROBERT E. BIBLE M wf ujn

Nh vo Q m www E OnjOm wQOIPqO m Q2@ www O24 Ohm www 52 Sheets-Sheet 5 Filed May 11, 1956 APIii 11, 1967 R. E. BIBLE 3,313,925

DIGITAL DIFFERENTIAL ANALYZER Filed May 1l, 1956 52 Sheets-$heet 6 FIG.8

FLIP FLOR G5 39 FLI 32 AND A ND CATHODE CATHODE R AND R AND AND

CATHODE AND PI INVERTER /I7 7 6| 44 AND AND AND AND

AND

4 INVENTOR.

ROBERT E. BIBLE BY ma a ATTORNEY April 11, R E, B|BLE DIGITAL DIFFERENTIAL ANALYZER 52 Sheets-Sheet '7 Filed May l1, 1956 April 11, 1967 R. E. 5151.5 3,313,925

DIGITAL DIFFERENTIAL ANALYZER Filed May 11, 195e 52 sheets-sheet s oo m Non April 1l, 1967 R. E. BIBLE DIGITAL DIFFERENTIAL ANALYZER 52 Sheets-Sheet 9 Filed May 11, 1956 INVENTOR. ROBERT E. BIBLE ATTORNEY April 11, 1967 R. E. BIBLE DIGITAL DIFFERENTIAL ANALYZER Filed May ll, 1956 52 Sheets-Sheet 1o FIG. I2

45e T f 652 FLIP |64 F f AND LFLIP j o AND cATHoDE p FLOP D 2gsm 654 656 540 636 639 fea? AND f cATHoDE f AND cATHoDE 642 -UAW FoLLowER V436 Lie-5g jANDl-q .y- /462 L6:54 p.

cATHoDE D FoLLowER AND T DR AND EADR 432 E FLTR AND As FLoP Z66o QNRFUT s. its? AND 75=(RF3+E5)T 446J 46| Il-j 7 A,(A3 @VAB @y *A3 @y *As p57*'psl '2/I7) T J AN D T A 144431@ *A3 Ry *A5 fewmws. R/T T 666 PM Pl/n AND INVERTER 56B 669 @[464 L CATHoDE 21s 444 J2ND 0R AND FOLLOWER 665 INVENToR. AND ROBERT EBTBLE L BY AND --L ATTORNEY April 1l, 1967 R. E. BIBLE DIGITAL DIFFERENTIAL ANALYZER 52 Sheets-Sheet 1 l Filed May 11, 1956 OZ. m.

mm2/0440.... moOI. o

wOJn-Om woor moor 0 nu @www 06am @dan QQ n wm D INVENTOR. ROBERT E. BIBLE L-Jm 79./

ATTORNEY April 11, 1967 Filed May 1l, 1956 l?. E.IBIEH E DIGITAL DIFFERENTIAL ANALYZER BATHODE L FIG- 4 FDLLOWER AND \7o5 1766 p=[e zaffznmzmewzgworar 'u D-won''ft" T cATHoDE AND p-'[?5=""*52?%15221 L 4u] FoLLowER M64 L77o Q 77a /780 cATHoDE 0R y FoLLowER AND AND CATHDE u AND FoLLowER 7l-5 Q7" L 786 7?" f7 cATHoDE FLN3 AND 0R s FLOP m FoLLowER AND '- FLIP f 4 FLOP '6 AND a AND (805 QN AND UR n HO AND cATHoDE 794 80o FoLLowER elo AND AND L Fup LNB D FLoP AND LBoe P' E" INVENTOR l {INVERTER l AND ROBERT E. BIBLE 2:6 44 Boa B ATTORNEY April 11, 1967 R. E. BIBLE 3,313,925

DIGITAL DIFFERENTIAL ANALYZER Filed May ll, 1956 52 Sheer.s-Shee I 13 FIG. l5

ZIO

April 11, 1967 R. E. BIBLE 3,313,925

yDIvGTTAI., DI FFERENT I'AL ANALYZ ER Filed May l1, 1956 53 Sheets-Sheet 14 FIG'. le

FLIP FLOP NVERTER FLIP FLOP INVERT FLlP ' FLoP INVERTER CATHODE 3(- OLLOWER o( CATHODE FOLLOWER INVENTOR. ROBERT E. BIBLE ATTORNEY April 11, 1967 R. I:. BIBLE 3,313,925

DIGITAL DIFFERENTIAL ANALYZER Filed May l1, 1956 52 Sheets-Sheet 15 FIG. I7 298 FLIP FI I P FLOP FLoP DELAY INVER AZFP IN V EN TOR.

April ll, 1967 Filed May ll, 1956 R. E. BIBLE 52 Sheets-Sheet 16 FIG. I8 T L' L2 298- '62 f FL'P FLIP FLIP 296 v FLDP FLoP FLDF L L|64 :I L:Ioes L3Io DEILIY INVERTER INVERTER m2 14o Iss P I IBIAND; IAND. I P 2'6 #96e I ANDE 222 AND I I- FL|P CII 968 C2 FLoF 2 FLIP FLIP 980 924 FLDP GA 978 39o p AND AND L AND FLIP E4 FLoP 976 Cl j' AND FLIP 992 984 FLoP 862 m0 a L FLIP BBB 994 G. FLoP 606 WCATHDDE /705 AND FDLLDWER '002 98B 1=R1(D*U+12)(D+u+12) D 604 FLIP IDDBI OO AND a (D1/@formed T FLoP 998 996 TM" 456k FL'P AND 1 CATIIDDE F2 FLOP "Z /7l3 P AND |010 FOLLOWER 962 r437 cATHoDE '7 208 I IoI2 Q lCATIIDDE FOI-LOWER AND I cATHoDE 964 FOLLOWER 1084 0R AFQLLQWERI 464 l INVENTOR. pf CTHODE AND f'o's ROBERT E. BIBLE FoLLowER BY ATTORNEY April 11, 1967 R. E. BIBLE 3,313,925

DIGITAL DIFFERENTIAL ANALYZER Filed May 1l, 1956 5g Sheets-Sheet 1'7 FI G. I9

FLIP

FLOP

BIO

VERTER INVERTE s FLIP 2 FLoP CATHODE FOLLOWER FLIP FLOP FLIP FLOP CATHODE FOLLOWE INVENTOR.

ATTORNEY April 11, 1967 R. E. BIBLE 3,313,925

DIGITAL DIFFERENTIAL ANALYZER Fued May 11, 1956 52 sheets-sheet 18 FIG. 2O

L. L2 La L FLIP FLIP FLIP FLIP FLOP FLOP FL'OP FLOP R INVE INVERTER IN Pf AND NVERTER FL|P AND FLoP INVENTOR. ROBERT E. BIBLE April 11, 1967 R. E. BIBLE l 3,313,925

DIGITAL DIFFERENTIAL ANALYZER Filed May ll, 1956 52 SheeI',s,-Sheerl 19 FIG. 2|

FLIP

FLOP

FLIP

FLOP

FLIP

FLOP

3 4 FLIP FLOP FLIP

FLOP

FLIP

FLOP

J4 FLIP FLOP PlzAND FLIP G FLOP Cl FLI-P 2 FLOP CATHODE OLLOWER CATH ODE FOLLOWER G FLIP 60 FLOP FLIP FLOP CATHODE OLLO Q CATHODE l FOLLOWE FLIP FLOP IIIO AND

INVENTOR.

ROBERT E. BIBLE III2 FLIP AzFLoP AND IIOG BY f2ZGJIZPMICEPIFIPLLLBLLLI T v /ww April 11, 1967 R. E. BIBLE v 3,313,925

DIGITAL DIFFERENTIAL ANALYZER Filed May ll, 1956 52 Sheets-Sheet 2O H22 Pls AND FLIP 390 G' FLIP AND H44 CATHODE FOLLOWE AND AND |54 AND FLIP F2 F BYM ATTORNEY 

1. IN A DIGITAL DIFFERENTIAL ANALYZER DEFINED BY A PLURALITY OF INTEGRATOR STORAGE SECTIONS AND DEFINED BY A PLURALITY OF DIGITAL POSITIONS IN EACH INTEGRATOR STORAGE SECTION IN THE PLURALITY AND HAVING AN INTERRELATIONSHIP BETWEEN THE INTEGRATOR STORAGE SECTIONS IN THE PLURALITY IN ACCORDANCE WITH A PROBLEM TO BE SOLVED, MEANS FOR SEQUENTIALLY PRESENTING THE INTEGRATOR STORAGE SECTIONS IN THE PLURALITY AND THE SUCCESSIVE DIGITAL POSITIONS IN EACH INTEGRATOR STORAGE SECTION IN THE PLURALITY FOR COMPUTATION TO OBTAIN SUCCESSIVE CYCLES OF COMPUTATION, MEANS FOR PROVIDING SIGNAL INDICATIONS REPRESENTING A DEPENDENT QUANTITY FOR A PARTICULAR INTEGRATOR STORAGE SECTION IN THE PLURALITY, MEANS FOR PROVIDING SIGNAL INDICATIONS EXTERNAL TO THE PARTICULAR INTEGRATOR STORAGE SECTION IN THE PLURALITY AND REPRESENTING A QUANTITY FOR COMPARISON WITH THE DEPENDENT QUANTITY FOR THE PARTICULAR INTEGRATOR STORAGE SECTION, MEANS RESPONSIVE TO THE SIGNAL INDICATIONS REPRESENTING THE DEPENDENT QUANTITY AND THE COMPARISON QUANTITY FOR THE PARTICULAR INTEGRATOR STORAGE SECTION FOR COMPARING THESE SIGNAL INDICATIONS UPON THE PRESENTATION OF THE PARTICULAR INTEGRATOR STORAGE SECTION FOR COMPUTATION TO PRODUCE SIGNALS REPRESENTING ERRORS IN THE DEPENDENT QUANTITY FOR THE PARTICULAR INTEGRATOR STORAGE SECTION, MEANS RESPONSIVE TO THE ERROR SIGNALS FOR EACH CYCLE OF COMPUTATION FOR INTRODUCING THESE ERROR SIGNALS BACK TO THE SIGNAL INDICATIONS REPRESENTING THE DEPENDENT QUANTITY FOR THE PARTICULAR INTEGRATOR STORAGE SECTION IN THE NEXT CYCLE OF COMPUTATION IN A DIRECTION FOR REDUCING ANY ERRORS BETWEEN THE DEPENDENT QUANTITY AND THE EXTERNAL QUANTITY FOR THE PARTICULAR INTEGRATOR STORAGE SECTION, MEANS RESPONSIVE IN EACH CYCLE OF COMPUTATION TO THE ERROR SIGNALS TWO CYCLES OF COMPUTATION PREVIOUSLY FOR THE PARTICULAR INTEGRATOR STORAGE SECTION FOR PROVIDING SIGNALS REPRESENTING THE INVERSE OF SUCH ERROR SIGNALS UPON A LACK OF AN ERROR IN THE PRECEDING CYCLE OF COMPUTATION, MEANS FOR PROVIDING SIGNAL INDICATIONS REPRESENTING DIGITAL VARIATIONS IN AN INDEPENDENT QUANTITY FOR THE PARTICULAR INTEGRATOR STORAGE SECTION UPON THE PRESEN- 